I was taught in nursing school that balding is due to high test levels and high test levels leads to prostate cancer. These increase your chances of developing prostate cancer later in life. Other risk factors include; old age (65 and older) risk increases each year, being obese, having a family history, and being an African American.

quoted this from an article i found on an online news site.

"What researchers found is that people who developed baldness early, in their 20s, were far more likely to suffer from prostate cancer later in life. The belief is that this is due to high testosterone levels in these people, as well as genetic traits that are linked between the two diseases. Overall, the risk of prostate cancer later in life for these men who developed premature baldness was said to be doubled. Prostate cancer is extremely common, and kill a quarter-million people each and every year." -News Desk